I've asked this in other forums and never got a satisfactory answer. And please don't just quote II Timothy 3:16. That's problematic for several reasons but it's circular reasoning anyway. Or if you do you use it I would ask why you believe that to be true.
View of The Catholic Encyclopedia
http://www.newadvent.org/cathen/01191a.htm
The African
bishops willingly allowed corrections to be made in a copy of the
Sacred Scriptures, or even a reference, when
necessary, to the Greek text. With some exceptions, it was the
Septuagint text that prevailed, for the
Old Testament, until the fourth century. In the case of the New, the
manuscripts were of the western type. (See Bible, Canon.) On this basis there arose a variety of translations and interpretations. This well-established fact as to the existence of a number of versions of the
Bible in Africa does not imply, however, that there was no one version more widely used and more generally received than the rest, i.e. the version which is found nearly complete in the works of
St. Cyprian. Yet even this version was not without rivals. Apart from the discrepancies to be found in two quotations of the same text in the works of two different authors, and sometimes of the same author, we now
know that of several books of Scripture there were versions wholly independent of each other. No fewer than three different versions of Daniel are to be found in use in Africa during the third century; in the middle of the fourth, the
Donatist Tychonius uses and collates two versions of the Apocalypse.
 
The name,
Early African Church, is given to the
Christian communities inhabiting the region known politically as Roman Africa, and comprised geographically within the following limits, namely: the Mediterranean littoral between
Cyrenaica on the east and the river Ampsaga (now the Rummel) on the west; that part of it which faces the Atlantic Ocean being called Mauretania. These
Christian communities, apparently, extended only as far as the neighbourhood of Tangiers (Tangi). The evangelization of Africa followed much the same lines as those traced by Roman civilization. Starting from Carthage, it overran Proconsular Africa and Numidia, and grew less thorough as it drew near to Mauretania.
 
 
 
CATHOLIC ENCYCLOPEDIA: New Testament
No book of ancient times has come down to us exactly as it left the hands of its author--all have been in some way altered. The material conditions under which a book was spread before the invention of printing (1440), the little care of the copyists, correctors, and glossators for the text, so different from the desire of accuracy exhibited today, explain sufficiently the divergences we find between various
manuscripts of the same work. To these causes may be added, in regard to the Scriptures,
exegetical difficulties and dogmatical controversies. To exempt the scared writings from ordinary conditions a very special providence would have been
necessary, and it has not been the will of
God to exercise this providence. More than 150,000 different readings have been found in the older witnesses to the text of the New Testament--which in itself is a
proof that Scriptures are not the only, nor the principal, means of revelation.
It would appear that the Catholics don't think the Bible is accurate.
BigRed